VDB-176844 · CVE-2020-23302 · GCVE-0-2020-23302

JerryScript 2.2.0 ecma-helpers-string.c ecma_ref_ecma_string use after free

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.5	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in JerryScript 2.2.0. This affects the function ecma_ref_ecma_string of the file ecma-helpers-string.c. The manipulation results in use after free. This vulnerability is cataloged as CVE-2020-23302. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in JerryScript 2.2.0. Affected is the function ecma_ref_ecma_string of the file ecma-helpers-string.c. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 06/11/2021. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2020-23302. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Programming Tool Software

Name

JerryScript

Version

2.2.0

License

free

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/13/2020 🔍
06/11/2021 +302 days 🔍
06/11/2021 +0 days 🔍
06/13/2021 +2 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-23302 (🔍)
GCVE (CVE): GCVE-0-2020-23302
GCVE (VulDB): GCVE-100-176844

Entryinfo

Created: 06/11/2021 13:42
Updated: 06/13/2021 14:20
Changes: 06/11/2021 13:42 (36), 06/13/2021 14:20 (3)
Complete: 🔍
Cache ID: 216::103